What Changed in the 2026 Tax Year, Figure by Figure

Every year, a long list of federal tax figures moves with inflation, and every year the same confusion follows: which numbers changed, by how much, and does any of it require you to do anything differently. This is the year-in-review answer for 2026, with every major figure in one place and links out to the full explanation of each one.

Why these numbers change every year at all

Most of the figures below are not new policy. They are the product of routine annual inflation indexing built into the tax code, using a formula tied to the Chained Consumer Price Index. The federal tax brackets, the standard deduction, retirement contribution limits, and the Social Security wage base are all recalculated this way every year, without Congress voting on each one individually. Understanding this explains why nothing below is a policy surprise: it is the same mechanism running again, on a new year's inflation data.

The federal income tax brackets

Every bracket threshold moved higher for 2026, which on its own lowers most people's effective tax rate slightly even if their income rose in step with inflation, because more of their income sits in the lower brackets before crossing into the next one.

Single filers:

Married filing jointly:

Full detail, including how the brackets stack rather than applying to your whole income at once, is in our guide to the 2026 federal tax brackets.

The standard deduction

The standard deduction is the amount subtracted from income before the brackets above apply, and it rose alongside them. Whether it makes sense to itemize instead depends on whether your itemizable deductions, most commonly mortgage interest and state and local taxes up to the cap, exceed these figures; see our standard deduction guide for the full comparison.

Retirement contribution limits

The retirement figures matter beyond the headline numbers because two structural features are easy to miss. First, the age-60-to-63 super catch-up is temporary by design, dropping back to the standard $8,000 at 64, covered fully in our 401(k) catch-up guide. Second, whether an IRA contribution is deductible is governed by an entirely separate set of income limits, not the contribution limit itself; see IRA deduction income limits for the 2026 phase-out ranges. General contribution limits for both accounts are in 401(k) contribution limits and IRA contribution limits.

Payroll and self-employment taxes

The Social Security wage base rose to $184,500, meaning Social Security tax now applies to a larger share of a high earner's income before the 6.2% stops for the year; see Social Security wage base 2026 for the full mechanics, including why paychecks jump later in the year once the cap is crossed. The Additional Medicare Tax thresholds, unlike the wage base, did not move; they are not indexed for inflation and have not changed in years, which our Additional Medicare Tax guide covers in detail, including why withholding on it is so often wrong for married couples.

Capital gains thresholds

These thresholds are separate from the ordinary income brackets above, on their own indexed schedule, and are covered fully in capital gains tax rates for 2026, including the mechanics of the genuinely useful 0% band.

The Alternative Minimum Tax exemption

The AMT exemption rose along with everything else, which continues a long trend of the AMT reaching fewer filers than it once did, now catching mainly people with large state and local tax deductions or incentive stock option exercises. The full mechanics, including why the rates are lower than the top ordinary bracket but the tax still bites some people, are in our guide, the Alternative Minimum Tax, and who still pays it.

Supplemental wage withholding

These rates, which govern how a bonus is withheld separately from your regular paycheck, did not change for 2026; they are set by statute rather than indexed annually. See how bonuses are taxed for why the withholding rate on a bonus is often not the rate you actually owe once your full year's income is calculated, and the bonus tax calculator to check your own.

What none of this changes

It is worth being explicit about what indexing does not touch, because assuming otherwise causes real planning mistakes. None of the figures above change your state tax situation; see states with no income tax and property tax by state for state-level detail that moves on entirely separate schedules, if at all. None of them change the FICA structure itself, only the dollar amounts within it. And inflation indexing does not touch state minimum wage figures, sales tax rates, or anything set at the state rather than federal level; those follow each state's own calendar.

Which of these figures actually requires you to act

Most of what moved for 2026 requires nothing from you; withholding tables and payroll systems apply the new figures automatically starting with your first 2026 paycheck. Three things are worth checking deliberately rather than assuming the system caught it:

Your 401(k) contribution election, if you are trying to hit the new $24,500 limit (or $35,750 with the super catch-up at ages 60 to 63). A flat percentage election does not automatically capture a new dollar limit; recalculate it, particularly if you got a raise.

Whether an IRA contribution you plan to deduct still falls inside the new phase-out range, if you or a spouse have a workplace plan and your income moved between 2025 and 2026.

Whether you are now within striking distance of the Additional Medicare Tax or Net Investment Income Tax thresholds, since neither is indexed and a raise alone can be enough to cross one this year even though it did not last year.

Run your specific numbers through the income tax calculator, paycheck calculator, or 401(k) calculator rather than assuming last year's plan still fits this year's figures. The thresholds moved. Whether your own situation moved with them is the only part of this that is actually worth checking by hand.

How to read this list if you only have five minutes

Most years, the honest advice is that indexing alone does not require anyone to take action, and 2026 is mostly that kind of year. But three groups of readers get more out of these figures than a passive skim, and it is worth naming them directly.

Anyone who got a raise between 2025 and 2026. A raise moves your position relative to several thresholds at once: your marginal bracket, your IRA deduction eligibility if you have a workplace plan, and potentially the Additional Medicare Tax threshold if the raise was large. None of these interact with each other automatically, so a single raise can quietly change three different answers that used to all point the same way.

Anyone within a few thousand dollars of the AMT exemption phase-out, or planning an incentive stock option exercise. The AMT exemption rose for 2026, which is worth checking against your specific plans for the year rather than assuming last year's AMT-free outcome repeats automatically; see the Alternative Minimum Tax, and who still pays it for the mechanics.

Anyone choosing between a Roth and a traditional contribution for the first time this year, whether because of a new job, a new 401(k) enrollment, or simply revisiting the decision. The bracket thresholds above are the direct input into that decision; see Roth vs traditional for how to weigh them.

For everyone else, the practical takeaway is narrower and less dramatic: the numbers moved, in the direction they usually move, by roughly the amount inflation indexing usually produces, and the system applies most of it without you doing anything at all.